diff --git a/SPEC/BITSWAP.md b/SPEC/BITSWAP.md
index 7971070f5e..678b599507 100644
--- a/SPEC/BITSWAP.md
+++ b/SPEC/BITSWAP.md
@@ -17,15 +17,15 @@ Bitswap API
 
 `callback` must follow `function (err, stats) {}` signature, where `err` is an error if the operation was not successful. `stats` is an Object containing the following keys:
 
-- `provideBufLen`
+- `provideBufLen` is an integer.
 - `wantlist` (array)
 - `peers` (array)
-- `blocksReceived`
-- `dataReceived`
-- `blocksSent`
-- `dataSent`
-- `dupBlksReceived`
-- `dupDataReceived`
+- `blocksReceived` is a [Big Int][1]
+- `dataReceived` is a [Big Int][1]
+- `blocksSent` is a [Big Int][1]
+- `dataSent` is a [Big Int][1]
+- `dupBlksReceived` is a [Big Int][1]
+- `dupDataReceived` is a [Big Int][1]
 
 If no `callback` is passed, a promise is returned.
 
@@ -47,3 +47,5 @@ ipfs.stats.bitswap((err, stats) => console.log(stats))
 //   dupBlksReceived: 0,
 //  dupDataReceived: 0 }
 ```
+
+[1]: https://github.com/MikeMcl/big.js/
diff --git a/SPEC/REPO.md b/SPEC/REPO.md
index 218a3929fc..db04e744fb 100644
--- a/SPEC/REPO.md
+++ b/SPEC/REPO.md
@@ -42,11 +42,11 @@ Where:
 
 `callback` must follow `function (err, stats) {}` signature, where `err` is an Error if the operation was not successful and `stats` is an object containing the following keys:
 
-- `numObjects`
-- `repoSize`
-- `repoPath`
-- `version`
-- `storageMax`
+- `numObjects` is a [Big Int][1].
+- `repoSize` is a [Big Int][1], in bytes.
+- `repoPath` is a string.
+- `version` is a string.
+- `storageMax` is a [Big Int][1].
 
 If no `callback` is passed, a promise is returned.
 
@@ -81,3 +81,5 @@ ipfs.repo.version((err, version) => console.log(version))
 
 // "6"
 ```
+
+[1]: https://github.com/MikeMcl/big.js/
diff --git a/SPEC/STATS.md b/SPEC/STATS.md
index 7bcd5f9dfc..21bbcbc098 100644
--- a/SPEC/STATS.md
+++ b/SPEC/STATS.md
@@ -11,7 +11,7 @@ Stats API
 
 #### `bw`
 
-> Adds an IPFS object to the pinset and also stores it to the IPFS repo. pinset is the set of hashes currently pinned (not gc'able).
+> Get IPFS bandwidth information as an object.
 
 ##### `Go` **WIP**
 
@@ -25,12 +25,14 @@ Where:
   - `poll` is used to print bandwidth at an interval.
   - `interval` is the time interval to wait between updating output, if `poll` is true.
 
-`callback` must follow `function (err, stats) {}` signature, where `err` is an error if the operation was not successful. `stats` is an Object containing the following keys:
+`callback` must follow `function (err, stat) {}` signature, where `err` is an Error if the operation was not successful.
 
-- `totalIn`
-- `totalOut`
-- `rateIn`
-- `rateOut`
+`stat` is, in both cases, an Object containing the following keys:
+
+- `totalIn` - is a [Big Int][big], in bytes.
+- `totalOut` - is a [Big Int][big], in bytes.
+- `rateIn` - is a [Big Int][big], in bytes.
+- `rateOut` - is a [Big Int][big], in bytes.
 
 If no `callback` is passed, a promise is returned.
 
@@ -39,8 +41,70 @@ If no `callback` is passed, a promise is returned.
 ```JavaScript
 ipfs.stats.bw((err, stats) => console.log(stats))
 
-// { totalIn: 15456,
-//   totalOut: 15420,
-//   rateIn: 905.0873512246716,
-//   rateOut: 893.7400053359125 }
+// { totalIn: Big {...},
+//   totalOut: Big {...},
+//   rateIn: Big {...},
+//   rateOut: Big {...} }
+```
+
+#### `bwPullStream`
+
+> Get IPFS bandwidth information as a [Pull Stream][ps].
+
+##### `Go` **WIP**
+
+##### `JavaScript` - ipfs.stats.bwPullStream([options]) -> [Pull Stream][ps]
+
+Options are described on [`ipfs.stats.bw`](#bw).
+
+**Example:**
+
+```JavaScript
+const pull = require('pull-stream')
+const log = require('pull-stream/sinks/log')
+
+const stream = ipfs.stats.bwReadableStream({ poll: true })
+
+pull(
+  stream,
+  log()
+)
+
+// { totalIn: Big {...},
+//   totalOut: Big {...},
+//   rateIn: Big {...},
+//   rateOut: Big {...} }
+// ...
+// Ad infinitum
 ```
+
+#### `bwReadableStream`
+
+> Get IPFS bandwidth information as a [Readable Stream][rs].
+
+##### `Go` **WIP**
+
+##### `JavaScript` - ipfs.stats.bwReadableStream([options]) -> [Readable Stream][rs]
+
+Options are described on [`ipfs.stats.bw`](#bw).
+
+**Examples:**
+
+```JavaScript
+const stream = ipfs.stats.bwReadableStream({ poll: true })
+
+stream.on('data', (data) => {
+  console.log(data)
+}))
+
+// { totalIn: Big {...},
+//   totalOut: Big {...},
+//   rateIn: Big {...},
+//   rateOut: Big {...} }
+// ...
+// Ad infinitum
+```
+
+[big]: https://github.com/MikeMcl/big.js/
+[rs]: https://www.npmjs.com/package/readable-stream
+[ps]: https://www.npmjs.com/package/pull-stream
diff --git a/js/src/repo.js b/js/src/repo.js
index e4973212fb..db143a2687 100644
--- a/js/src/repo.js
+++ b/js/src/repo.js
@@ -5,6 +5,7 @@
 
 const chai = require('chai')
 const dirtyChai = require('dirty-chai')
+const statsTests = require('./utils/stats')
 const expect = chai.expect
 chai.use(dirtyChai)
 
@@ -46,26 +47,15 @@ module.exports = (common) => {
     })
 
     it('.stat', (done) => {
-      ipfs.repo.stat((err, stat) => {
-        expect(err).to.not.exist()
-        expect(stat).to.exist()
-        expect(stat).to.have.property('numObjects')
-        expect(stat).to.have.property('repoSize')
-        expect(stat).to.have.property('repoPath')
-        expect(stat).to.have.property('version')
-        expect(stat).to.have.property('storageMax')
+      ipfs.repo.stat((err, res) => {
+        statsTests.expectIsRepo(err, res)
         done()
       })
     })
 
     it('.stat Promise', () => {
-      return ipfs.repo.stat().then((stat) => {
-        expect(stat).to.exist()
-        expect(stat).to.have.property('numObjects')
-        expect(stat).to.have.property('repoSize')
-        expect(stat).to.have.property('repoPath')
-        expect(stat).to.have.property('version')
-        expect(stat).to.have.property('storageMax')
+      return ipfs.repo.stat().then((res) => {
+        statsTests.expectIsRepo(null, res)
       })
     })
 
diff --git a/js/src/stats.js b/js/src/stats.js
index 58703c2e9c..b634ad1c36 100644
--- a/js/src/stats.js
+++ b/js/src/stats.js
@@ -5,7 +5,9 @@
 
 const chai = require('chai')
 const dirtyChai = require('dirty-chai')
+const statsTests = require('./utils/stats')
 const expect = chai.expect
+const pull = require('pull-stream')
 chai.use(dirtyChai)
 
 module.exports = (common) => {
@@ -43,17 +45,7 @@ module.exports = (common) => {
       }
 
       ipfs.stats.bitswap((err, res) => {
-        expect(err).to.not.exist()
-        expect(res).to.exist()
-        expect(res).to.have.a.property('provideBufLen')
-        expect(res).to.have.a.property('wantlist')
-        expect(res).to.have.a.property('peers')
-        expect(res).to.have.a.property('blocksReceived')
-        expect(res).to.have.a.property('dataReceived')
-        expect(res).to.have.a.property('blocksSent')
-        expect(res).to.have.a.property('dataSent')
-        expect(res).to.have.a.property('dupBlksReceived')
-        expect(res).to.have.a.property('dupDataReceived')
+        statsTests.expectIsBitswap(err, res)
         done()
       })
     })
@@ -65,16 +57,7 @@ module.exports = (common) => {
       }
 
       return ipfs.stats.bitswap().then((res) => {
-        expect(res).to.exist()
-        expect(res).to.have.a.property('provideBufLen')
-        expect(res).to.have.a.property('wantlist')
-        expect(res).to.have.a.property('peers')
-        expect(res).to.have.a.property('blocksReceived')
-        expect(res).to.have.a.property('dataReceived')
-        expect(res).to.have.a.property('blocksSent')
-        expect(res).to.have.a.property('dataSent')
-        expect(res).to.have.a.property('dupBlksReceived')
-        expect(res).to.have.a.property('dupDataReceived')
+        statsTests.expectIsBitswap(null, res)
       })
     })
 
@@ -85,12 +68,7 @@ module.exports = (common) => {
       }
 
       ipfs.stats.bw((err, res) => {
-        expect(err).to.not.exist()
-        expect(res).to.exist()
-        expect(res).to.have.a.property('totalIn')
-        expect(res).to.have.a.property('totalOut')
-        expect(res).to.have.a.property('rateIn')
-        expect(res).to.have.a.property('rateOut')
+        statsTests.expectIsBandwidth(err, res)
         done()
       })
     })
@@ -102,14 +80,42 @@ module.exports = (common) => {
       }
 
       return ipfs.stats.bw().then((res) => {
-        expect(res).to.exist()
-        expect(res).to.have.a.property('totalIn')
-        expect(res).to.have.a.property('totalOut')
-        expect(res).to.have.a.property('rateIn')
-        expect(res).to.have.a.property('rateOut')
+        statsTests.expectIsBandwidth(null, res)
+      })
+    })
+
+    it('.bwReadableStream', (done) => {
+      if (!withGo) {
+        console.log('Not supported in js-ipfs yet')
+        return done()
+      }
+
+      const stream = ipfs.stats.bwReadableStream()
+
+      stream.once('data', (data) => {
+        statsTests.expectIsBandwidth(null, data)
+        stream.destroy()
+        done()
       })
     })
 
+    it('.bwPullStream', (done) => {
+      if (!withGo) {
+        console.log('Not supported in js-ipfs yet')
+        return done()
+      }
+
+      const stream = ipfs.stats.bwPullStream()
+
+      pull(
+        stream,
+        pull.collect((err, data) => {
+          statsTests.expectIsBandwidth(err, data[0])
+          done()
+        })
+      )
+    })
+
     it('.repo', (done) => {
       if (!withGo) {
         console.log('Not supported in js-ipfs yet')
@@ -117,13 +123,7 @@ module.exports = (common) => {
       }
 
       ipfs.stats.repo((err, res) => {
-        expect(err).to.not.exist()
-        expect(res).to.exist()
-        expect(res).to.have.a.property('numObjects')
-        expect(res).to.have.a.property('repoSize')
-        expect(res).to.have.a.property('repoPath')
-        expect(res).to.have.a.property('version')
-        expect(res).to.have.a.property('storageMax')
+        statsTests.expectIsRepo(err, res)
         done()
       })
     })
@@ -135,12 +135,7 @@ module.exports = (common) => {
       }
 
       return ipfs.stats.repo().then((res) => {
-        expect(res).to.exist()
-        expect(res).to.have.a.property('numObjects')
-        expect(res).to.have.a.property('repoSize')
-        expect(res).to.have.a.property('repoPath')
-        expect(res).to.have.a.property('version')
-        expect(res).to.have.a.property('storageMax')
+        statsTests.expectIsRepo(null, res)
       })
     })
   })
diff --git a/js/src/utils/stats.js b/js/src/utils/stats.js
new file mode 100644
index 0000000000..24440a71b7
--- /dev/null
+++ b/js/src/utils/stats.js
@@ -0,0 +1,63 @@
+/* eslint-env mocha */
+/* eslint max-nested-callbacks: ["error", 8] */
+
+'use strict'
+
+const Big = require('big.js')
+const { expect } = require('chai')
+
+const isBigInt = (n) => {
+  return n.constructor.name === 'Big'
+}
+
+module.exports.expectIsBitswap = (err, stats) => {
+  expect(err).to.not.exist()
+  expect(stats).to.exist()
+  expect(stats).to.have.a.property('provideBufLen')
+  expect(stats).to.have.a.property('wantlist')
+  expect(stats).to.have.a.property('peers')
+  expect(stats).to.have.a.property('blocksReceived')
+  expect(stats).to.have.a.property('dataReceived')
+  expect(stats).to.have.a.property('blocksSent')
+  expect(stats).to.have.a.property('dataSent')
+  expect(stats).to.have.a.property('dupBlksReceived')
+  expect(stats).to.have.a.property('dupDataReceived')
+
+  expect(stats.provideBufLen).to.a('number')
+  expect(stats.wantlist).to.be.an('array')
+  expect(stats.peers).to.be.an('array')
+  expect(isBigInt(stats.blocksReceived)).to.eql(true)
+  expect(isBigInt(stats.dataReceived)).to.eql(true)
+  expect(isBigInt(stats.blocksSent)).to.eql(true)
+  expect(isBigInt(stats.dataSent)).to.eql(true)
+  expect(isBigInt(stats.dupBlksReceived)).to.eql(true)
+  expect(isBigInt(stats.dupDataReceived)).to.eql(true)
+}
+
+module.exports.expectIsBandwidth = (err, stats) => {
+  expect(err).to.not.exist()
+  expect(stats).to.exist()
+  expect(stats).to.have.a.property('totalIn')
+  expect(stats).to.have.a.property('totalOut')
+  expect(stats).to.have.a.property('rateIn')
+  expect(stats).to.have.a.property('rateOut')
+  expect(isBigInt(stats.totalIn)).to.eql(true)
+  expect(isBigInt(stats.totalOut)).to.eql(true)
+  expect(isBigInt(stats.rateIn)).to.eql(true)
+  expect(isBigInt(stats.rateOut)).to.eql(true)
+}
+
+module.exports.expectIsRepo = (err, res) => {
+  expect(err).to.not.exist()
+  expect(res).to.exist()
+  expect(res).to.have.a.property('numObjects')
+  expect(res).to.have.a.property('repoSize')
+  expect(res).to.have.a.property('repoPath')
+  expect(res).to.have.a.property('version')
+  expect(res).to.have.a.property('storageMax')
+  expect(isBigInt(res.numObjects)).to.eql(true)
+  expect(isBigInt(res.repoSize)).to.eql(true)
+  expect(isBigInt(res.storageMax)).to.eql(true)
+  expect(res.repoPath).to.be.a('string')
+  expect(res.version).to.be.a('string')
+}
diff --git a/package.json b/package.json
index 9995953e0b..5427879daa 100644
--- a/package.json
+++ b/package.json
@@ -32,6 +32,7 @@
   "dependencies": {
     "aegir": "^12.3.0",
     "async": "^2.6.0",
+    "big.js": "^5.0.3",
     "bl": "^1.2.1",
     "bs58": "^4.0.1",
     "chai": "^4.1.2",