Concrete Calculators

Volume, weight, blocks, and more

Roof Calculators

Pitch, area, and rafter calculations

LED Calculators

LED resistor and circuit calculations

Voltage Calculators

Voltage drop and conversion tools

Complete oil drilling calculations

Milling Machine

Machine parameters and calculations

Vehicle performance calculations

Learning Center

Professional construction and engineering calculators for accurate measurements, estimates, and calculations across various industries.

Calculator Categories

Concrete LED Milling Oil Drilling Roof Voltage Automotive

Available On

© 2025 Handyman Calculator. All rights reserved.

Privacy Policy Contact Us About Us

LED Calculators

Professional LED calculators for electronic projects

Why Use Our LED Calculators?

Calculate exact resistor values for LED circuits
Optimize LED brightness and efficiency
Prevent LED burnout with accurate calculations
Design reliable LED circuits quickly

Category illustration

All LED Calculators

LED Resistor Calculator

Calculate the correct resistor value for single LED circuits

LED Resistor Parallel Calculator

Calculate resistor values for parallel LED configurations

LED Resistor Series Calculator

Calculate resistor values for series LED configurations

Professional LED Calculators

Our led calculators are designed for professionals and engineers. Get accurate results for critical parameters including:

• LED Resistor Calculator
• LED Resistor Parallel Calculator
• LED Resistor Series Calculator