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Simple.Tools brings together practical online tools for text, data, developer workflows, media, PDF, calculations, and quick browser-side utilities.
Simple.Tools is built for the kind of small jobs people do every day: cleaning text, checking JSON, converting files, generating tokens, formatting code, running quick calculations, or inspecting structured data. The goal is to keep the path from input to result short, clear, and usable in the browser.
Most tools on the site are designed to be free, fast to open, and easy to reuse. That makes them useful for quick debugging, routine office tasks, content preparation, developer workflows, and one-off utility work where installing separate software would be unnecessary overhead.
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Remove Duplicates
Remove repeated lines from pasted text while preserving clean readable output.
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.Htaccess Redirect Generator
Generate .htaccess redirect rules for domain, page, or HTTPS redirect scenarios.
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AES Encrypt and Decrypt
Encrypt or decrypt text locally using AES for simple browser-side workflows.
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Age Calculator
Calculate exact age from birth date to today or any target date.
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Amortization Calculator
Generate detailed amortization schedules for loans with payment and balance breakdowns.
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APA Citation Generator
Generate APA citations from book, article, or website details in a guided form.
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Area Converter
Convert area values between square meters, square feet, acres, hectares, and more.
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Aspect Ratio Calculator
Calculate image, video, and screen aspect ratios from width and height values.
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Attendance Calculator
Calculate attendance percentages and how many classes you can miss or must attend.
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Audio Converter
Convert audio files between common formats for compatibility and simpler sharing.
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Audio Trimmer
Trim audio clips by start and end time for ringtones, snippets, and quick edits.
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Average Calculator
Calculate averages from number lists including sum, count, and mean instantly.