Free Online Calculators & Utility Tools
Fast, ad-supported tools. No tracking, no account required.
BTU ↔ kW Converter
Convert HVAC capacity ratings instantly. Free, no signup.
Open tool →Mortgage Amortization Calculator
See your full payment schedule and total interest paid over the life of the loan.
Open tool →Currency Cross-Rate Calculator
10-currency conversion grid using live exchange rates. USD, EUR, GBP and more.
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Running Pace Calculator
Compute pace, time, or distance for any race — 5K, 10K, half marathon, marathon.
Open tool →US ZIP Code to Time Zone
Free lookup of any US ZIP code's timezone, UTC offset, and DST status.
Open tool →About this network
Daily Army is a collection of lightweight, free utility tools. Each tool is a dedicated subdomain — fast-loading static pages with no login required. Supported by ads; no client-side tracking beacons or analytics cookies.