API · /bytes-api

Bytes API

healthy 3,380 Subscribers

Humanize, parse and convert byte sizes. Turn a raw byte count into a human-readable string (1610612736 → 1.5 GiB or 1.61 GB), parse a human size back into bytes ("1.5 GiB", "2GB", "500 kB" → the exact integer), and convert an amount between any two units. Handles both the IEC binary units (KiB, MiB, GiB, TiB — powers of 1024) and the SI decimal units (kB, MB, GB, TB — powers of 1000), with configurable decimal places and case-insensitive unit names. Perfect for dashboards and admin UIs, file-upload limits, storage and bandwidth reporting, logs and CLI output. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. Distinct from file-type detection and from number/unit measurement conversion.

#bytes #filesize #humanize #units #formatting #developer-tools

api.oanor.com/bytes-api

Get an API key Try in playground → Contact provider

Machine-readable spec so AI agents can integrate this API.

/api/bytes-api/openapi.json

/api/bytes-api/llms.txt

Discovery: GET /api/index.json lists every API.

API health

healthy

Uptime: 100.00%; Server probes · 24h
Avg latency: 88 ms; Server probes · 24h
Subscribers: 3,380; active
Total calls: 56; last 7 days

Full status page → · 20 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

880 calls / month
2 requests / second
Hard cap (429 above quota, no overage)
880 calls/month
2 req/sec
Format + parse + convert
No credit card

Starter

€1.70 /month

7,300 calls / month
8 requests / second
Hard cap (429 above quota, no overage)
7.3k calls/month
8 req/sec
SI + IEC units
Email support

Pro

€20.20 /month

131,000 calls / month
20 requests / second
Hard cap (429 above quota, no overage)
131k calls/month
20 req/sec
Dashboard / reporting pipelines
Priority support

Mega

€56.20 /month

675,000 calls / month
50 requests / second
Hard cap (429 above quota, no overage)
675k calls/month
50 req/sec
Platform scale
Dedicated SLA

Built by

PremiumApi

Related APIs

Other APIs with overlapping tags.

Data Transfer API

Data-transfer and bandwidth maths as an API, computed locally and deterministically. The time endpoint computes how long a file takes to transfer at a given bandwidth, time = file bits ÷ (rate × (1 − overhead)), accepting sizes in B, KB, MB, GB, TB or the binary KiB/MiB/GiB and rates in bps, Kbps, Mbps, Gbps or bytes-per-second (MB/s), with an optional protocol-overhead allowance, and returns the time in seconds, minutes, hours and a human-readable form. The bandwidth endpoint works backwards: the bandwidth needed to move a file within a target time, in bps, Mbps, Gbps and MB/s. The convert endpoint converts a data size between decimal (1 MB = 1,000,000 bytes) and binary (MiB = 1,048,576) units, or a data rate between bit-rates and byte-rates. Everything is computed locally and deterministically, so it is instant and private. Ideal for networking, cloud, backup and streaming app developers, download-time and capacity-planning tools, and dev dashboards. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is transfer time and bandwidth; for media encoding bitrate use a bitrate API.

api.oanor.com/transfer-api

Cooking API

Recipe and kitchen conversions as an API. Convert between volume units (teaspoon, tablespoon, cup, fl-oz, ml, litre, pint, quart, gallon) and between mass units (gram, kilogram, ounce, pound) — and, crucially, between volume and mass for a specific ingredient using its density, so 1 cup of all-purpose flour ≈ 125 g, 1 cup of granulated sugar ≈ 200 g and 1 cup of water ≈ 237 g. 30 common ingredients are built in (flours, sugars, butter, oils, honey, rice, oats, cocoa, cornstarch and more), each with its grams-per-cup. Perfect for recipe apps, scaling and "metric vs cups" conversion, shopping lists and meal-prep tools. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. Distinct from general physical unit conversion, which has no ingredient densities.

api.oanor.com/cooking-api

Truncate API

Truncate text cleanly. Cut a string to a maximum number of characters — at the end, the start or the middle — breaking on word boundaries so words are never chopped in half, and adding an ellipsis (which counts toward the limit). Middle truncation keeps the start and end and elides the centre, ideal for long file paths and IDs. A words endpoint trims to a number of whole words instead. Everything is emoji- and Unicode-safe (it counts code points, not bytes), so multi-byte characters and emoji are never split. Perfect for previews and teasers, table cells and cards, meta descriptions, breadcrumbs and CLI output. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. Distinct from word wrapping, case conversion and text statistics.

api.oanor.com/truncate-api

Title Case API

Convert a heading to proper headline (title) case the way editors do — not a naive capitalise-every-word. It capitalises the first and last words and all the major words, while keeping articles (a, an, the), coordinating conjunctions (and, but, or…) and prepositions lowercase, and always capitalises the word right after a colon. Choose AP style (lowercases short prepositions, capitalises longer ones) or Chicago style (lowercases prepositions of any length). Hyphenated compounds such as well-known and state-of-the-art are handled correctly. Perfect for article and blog titles, headings, SEO meta titles, product and section names, and CMS tooling. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. Distinct from a plain title/sentence case converter, which capitalises every word.

api.oanor.com/titlecase-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Bytes API?

Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Bytes API with the x-oanor-key header. No credit card needed for the free tier.

What's the rate limit for Bytes API?

Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.

How much does Bytes API cost?

Bytes API has a free tier with 100 calls / month. Paid plans start at €1.70 / month with higher quotas and faster rate limits.

Can I cancel my subscription anytime?

Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.

Is Bytes API GDPR-compliant?

All requests to Bytes API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Bytes 3

Meta 1

Pick an endpoint from the list on the left to see its details and try it.

GET /v1/convert

Convert between units

Playground

Parameters

Custom headers

Language: Client:

GET /v1/format

Humanize a byte count

Playground

Parameters

Custom headers

Language: Client:

GET /v1/parse

Parse a size string to bytes

Playground

Parameters

Custom headers

Language: Client:

GET /v1/meta

Spec

Playground

Custom headers

Language: Client:

Code snippets

curl https://api.oanor.com/bytes-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."

const res = await fetch("https://api.oanor.com/bytes-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();

$ch = curl_init("https://api.oanor.com/bytes-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);

import requests
r = requests.get(
    "https://api.oanor.com/bytes-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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Bytes API

API health

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Related APIs

Data Transfer API

Cooking API

Truncate API

Title Case API

Frequently asked questions

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