---
title: "Sig Fig Calculator"
method: GET
path: "/api/calc/significant-figures-calculator"
tags: ["Math"]
---

# Sig Fig Calculator

`GET /api/calc/significant-figures-calculator`

## Request

- Base URL: `https://calcbright.com`
- URL: `https://calcbright.com/api/calc/significant-figures-calculator`
- Auth: none declared

Does 0.004050 have 3 or 4 sig figs? Paste any number to see which digits are significant and the rule behind each one, then round it to as many as you need.

## Query parameters

- `number` string: Number Type it exactly as written – trailing zeros matter. Scientific notation like 6.02e23 or 6.02 × 10^23 works too.
- `round` number: Round to (sig figs) Optional

## Response `200`

Calculation result

- CalcOutput
  - `ok` boolean
  - `tool` string
  - `name` string
  - `url` string: Open this link to see the full calculation
  - `inputs` object
  - `summary` string: Plain-text answer
  - `details` string
  - `result` object
  - `errors` object

## Other responses

- `400`: Invalid input (see errors)

---

[API](https://skmtc.dev/calcbright/apis/calcbright-calculator-api.md) · [All operations](https://skmtc.dev/calcbright/apis/calcbright-calculator-api/llms.txt) · [OpenAPI document](https://skmtc.dev/calcbright/apis/calcbright-calculator-api/revisions/f58229e56e58?raw)