# Find

Browse 40 online Find tools for finding and working with data in your browser. Text inputs are not stored, and uploaded files are automatically deleted after 6 hours.

> Canonical page: https://elysiatools.com/en/tags/find

## Overview

Explore 40 Find tools for locating and working with matching content or data through a browser-based interface. No software installation is required; processing runs on Elysia Tools servers.

## Frequently asked questions

### What can I do with Find tools?

Find tools help you locate or work with matching content and data through the browser interface. Available operations depend on the individual tool.

### Do I need to install software?

No. You can use Find tools through your browser without installing software, while processing runs on Elysia Tools servers.

### How is my data handled?

Text inputs are not stored. Uploaded files are automatically deleted after 6 hours, and processing runs on Elysia Tools servers.

## Tools

- [Audio Overlap Speech Detector](https://elysiatools.com/en/tools/audio-overlap-speech-detector): Find likely simultaneous speech-like activity by detecting multiple balanced voice-frequency bands.
- [Audio Peak Detector](https://elysiatools.com/en/tools/audio-peak-detector): Find the peak volume level in an audio file
- [Audio True Peak Meter](https://elysiatools.com/en/tools/audio-true-peak-meter): Analyze audio to find true peak level
- [International Calling Code](https://elysiatools.com/en/tools/calling-code): Find the international telephone calling code for any country
- [Capital City Finder](https://elysiatools.com/en/tools/capital-city): Find the capital city of any country
- [Color Complement](https://elysiatools.com/en/tools/color-complement): Find complementary colors and create harmonious color schemes with triadic, tetradic, and analogous color relationships
- [Constellation Finder](https://elysiatools.com/en/tools/constellation-finder): Find visible constellations and zodiac signs for any date
- [Currency by Country](https://elysiatools.com/en/tools/currency-by-country): Find the currency used in any country including symbol, code, and exchange information
- [Foreign Key Validator](https://elysiatools.com/en/tools/data-foreign-key-validator): Validate foreign key relationships between multiple datasets. Perfect for checking data integrity, finding orphaned records, and ensuring referential consistency across related tables. Features: - Validate foreign key relationships - Find orphaned records - Check referential integrity - Support multiple key formats - Cross-table validation - Missing key detection - Duplicate key analysis - Relationship mapping Common Use Cases: - Database integrity checks - Data migration validation - ETL process verification - Referential consistency checks - Data quality assurance - Relationship analysis
- [Duplicate Column Remover](https://elysiatools.com/en/tools/duplicate-column-remover): Remove duplicate columns from CSV data with flexible detection strategies. Perfect for cleaning datasets, removing redundant information, and optimizing data structure. Features: - Detect columns with identical headers - Find columns with identical data content - Support for case-sensitive/insensitive matching - Multiple removal strategies available - Preserve data integrity - Support for large datasets - Fast and efficient processing Common Use Cases: - Clean up merged datasets - Remove redundant data columns - Optimize data for analysis - Prepare data for machine learning - Reduce file size and complexity - Standardize data format
- [File Extension Finder](https://elysiatools.com/en/tools/file-extension-finder): Find file extensions by searching file type name or description
- [Find Key](https://elysiatools.com/en/tools/find-key): Find the first matching key using lodash _.findKey
- [Half-Life Calculator](https://elysiatools.com/en/tools/half-life-calculator): Exponential decay for radioactive isotopes and drugs: remaining amount, derived half-life, time to target, or steady-state accumulation. Uses N(t) = N0·e^(-λt).
- [Index Of](https://elysiatools.com/en/tools/index-of): Find the index of a value in array using lodash _.indexOf
- [Intersection Arrays](https://elysiatools.com/en/tools/intersection-arrays): Find common values across multiple arrays using lodash _.intersection
- [IUPAC Organic Naming Tool](https://elysiatools.com/en/tools/iupac-organic-naming-tool): Parse SMILES, detect the senior functional group, find the longest carbon chain, and emit a teaching-oriented IUPAC name with E/Z and R/S hints.
- [Line of Best Fit Calculator](https://elysiatools.com/en/tools/line-of-best-fit-calculator): Find the linear trend line of best fit for paired data and predict y values from x
- [Median Calculator](https://elysiatools.com/en/tools/median-calculator): Find the median of a dataset, inspect the sorted sequence, and optionally review quartiles and interquartile range
- [Multi-Timezone Working-Hours Overlap Finder](https://elysiatools.com/en/tools/meeting-timezone-overlap-finder): Find meeting windows where 2–6 participants across time zones are all working. Computes UTC intersection, ranks by comfort, exports .ics.
- [Memory Game](https://elysiatools.com/en/tools/memory-game): Classic memory matching game. Flip cards two at a time to find matching pairs; tracks moves and time, then grades you. Easy / standard / hard grids, emoji or number card faces.
- [Mode Calculator](https://elysiatools.com/en/tools/mode-calculator): Find the most frequent value or values in a dataset and inspect the supporting frequency distribution
- [Number Combination Duplicate Finder](https://elysiatools.com/en/tools/number-combination-duplicate-finder): Paste multiple number combinations and find which numbers repeat across the whole set, with occurrence counts and group positions.
- [pH & Buffer Calculator](https://elysiatools.com/en/tools/ph-buffer-calculator): Calculate buffer solution pH with the Henderson-Hasselbalch equation, or find the acid/base ratio needed for a target pH.
- [Planet Position Finder](https://elysiatools.com/en/tools/planet-position): Find the current position of planets in the sky

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