---
title: "Roth conversion comparison"
method: GET
path: "/api/v1/calculate/roth-conversion"
---

# Roth conversion comparison

`GET /api/v1/calculate/roth-conversion`

## Request

- Base URL: `https://everycalc.xyz`
- URL: `https://everycalc.xyz/api/v1/calculate/roth-conversion`
- Auth: none declared

Value of converting to a Roth now, with the tax paid out of the converted amount, versus leaving the money in a traditional account taxed at the retirement rate, after growth. Results match the interactive calculator at everycalc.xyz; every response includes a calculator_url deep link to it.

## Query parameters

- `conversion_amount` number, required
- `current_tax_rate_pct` number, required
- `retirement_tax_rate_pct` number, required
- `years` number, required
- `annual_return_pct` number, required

## Response `200`

Calculation result.

## Other responses

- `400`: Invalid input.

---

[API](https://skmtc.dev/everycalc/apis/everycalc-api.md) · [All operations](https://skmtc.dev/everycalc/apis/everycalc-api/llms.txt) · [OpenAPI document](https://skmtc.dev/everycalc/apis/everycalc-api/revisions/a4bd5db0868a?raw)