---
title: "Amazon FBA Profit Calculator"
method: POST
path: "/api/v1/tools/amazon-fba-calculator"
tags: ["business"]
---

# Amazon FBA Profit Calculator

`POST /api/v1/tools/amazon-fba-calculator`

## Request

- Base URL: `https://calcfleet.com`
- URL: `https://calcfleet.com/api/v1/tools/amazon-fba-calculator`
- Auth: none declared

Calculate Amazon FBA net profit, margin, and ROI for any product. Enter price, COGS, and size tier to see the full fee breakdown and your break-even price.

## Request body

- object
  - `price` number, required
  - `cogs` number, required
  - `adCost` number, required
  - `sizeTier` 'small_standard' | 'large_standard_1lb' | 'large_standard_2lb' | 'large_standard_3lb' | 'large_bulky' | 'extra_large', required
  - `referralRatePct` number, required

## Response `200`

Successful calculation result.

- object
  - `result` object, required: Structured calculation output (fields vary per calculator).

## Other responses

- `400`: Invalid input — the issues array contains Zod validation errors.
- `403`: Forbidden — an Authorization: Bearer cf_… key was supplied but is invalid.
- `404`: Unknown tool slug.

---

[API](https://skmtc.dev/calcfleet/apis/calcfleet-financial-calculators-api.md) · [All operations](https://skmtc.dev/calcfleet/apis/calcfleet-financial-calculators-api/llms.txt) · [OpenAPI document](https://skmtc.dev/calcfleet/apis/calcfleet-financial-calculators-api/revisions/cd9abd595bbe?raw)