# Troy Weight Conversion Calculator

> Convert precious-metal weights between grains, pennyweights, troy ounces, troy pounds, grams, and kilograms.

Page: https://askcalculators.com/calculator/troy-weight-conversion-calculator/
Definition: https://askcalculators.com/calculator/troy-weight-conversion-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/troy-weight-conversion-calculator/schema.json
Version: 1.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/troy-weight-conversion-calculator/?value=1&fromUnit=ozt&toUnit=g

## Inputs
- value: Weight; type=number; required; default=1
- fromUnit: From unit; type=select; required; default=ozt; values=grain|dwt|ozt|lbt|g|kg
- toUnit: To unit; type=select; required; default=g; values=grain|dwt|ozt|lbt|g|kg

## Outputs
- result: Converted weight; format=number; primary
- grams: Equivalent grams; format=number

## Formula
grams = value × grams-per-source-unit; result = grams ÷ grams-per-target-unit

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.