Best Tools · 수학

2026년 최고의 무료 온라인 계산기 도구

백분율, 분수, 대출, BMI 계산 등, 이 무료 온라인 계산기는 즉각적이고 정확한 결과를 제공합니다. 모든 도구는 브라우저에서 작동합니다.

#1

백분율 계산기

Calculating percentages and discounts

온라인 무료 퍼센트 계산기 — 증가율, 감소율, 차이, 비율 계산, 역계산 지원. 빠르고 정확하며 사용하기 쉬운 일상 계산 도구.

✅ Pros
  • 3 calculation modes
  • Instant results
  • Mobile-friendly
⚠️ Cons
  • None significant
Use Free →
#2

과학 계산기

Complex scientific and engineering calculations

Perform advanced scientific calculations with trigonometry, logs, and exponents. Free online scientific calculator for math.

✅ Pros
  • Advanced functions
  • Memory store
  • History
⚠️ Cons
  • None significant
Use Free →
#3

대출 계산기

Calculating mortgage and loan payments

Calculate monthly payments for personal or auto loans. See total interest paid and a full amortization schedule.

✅ Pros
  • Monthly payment
  • Amortization schedule
  • Interest rates
⚠️ Cons
  • None significant
Use Free →
#4

분수 계산기

Working with fractions

Add, subtract, multiply, and divide fractions with step-by-step results. Free online fraction calculator for math and cooking.

✅ Pros
  • Simplify fractions
  • Mixed numbers
  • All operations
⚠️ Cons
  • None significant
Use Free →
#5

BMI 계산기

Calculating Body Mass Index

온라인 무료 BMI 계산기 — 체질량 지수를 즉시 계산. 미터법/야드법 모두 지원, BMI 카테고리 차트, 건강 체중 범위, 팁 제공.

✅ Pros
  • Metric and imperial
  • Health category
  • Instant
⚠️ Cons
  • None significant
Use Free →
#6

Age 계산기

Calculating exact age from birthday

온라인 무료 나이 계산기 — 년, 월, 주, 일, 시간, 분 단위로 정확한 나이 계산. 다음 생일까지 카운트다운, 원하는 날짜의 나이 계산 가능.

✅ Pros
  • Exact years and days
  • Multi-format
  • Fast
⚠️ Cons
  • None significant
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#7

Tip 계산기

Calculating tips and splitting bills

Calculate tips and split bills between multiple people instantly. Free online tip calculator for restaurant bills and groups.

✅ Pros
  • Split bills
  • Custom tip rates
  • Round up
⚠️ Cons
  • None significant
Use Free →
#8

백분율 Change

Calculating percentage changes

Calculate percentage increase or decrease between two values. Free online percentage change calculator for finance and growth.

✅ Pros
  • Increase and decrease
  • Visual chart
  • History
⚠️ Cons
  • None significant
Use Free →
#9

평균 계산기

Calculating averages and statistics

Calculate the mean, median, mode, and range of numbers instantly. Free online average calculator for statistics and data.

✅ Pros
  • Weighted average
  • Median and mode
  • Export
⚠️ Cons
  • None significant
Use Free →
#10

비율 계산기

Working with ratios and proportions

Calculate ratios, proportions, and scale factors for numbers. Free online ratio calculator for recipes, finance, and engineering.

✅ Pros
  • Simplify ratios
  • Scale up/down
  • Visual
⚠️ Cons
  • None significant
Use Free →

Frequently Asked Questions

Are these online calculators accurate?

Yes. They use standard, well-documented formulas (BMI, loan amortization, percentage change, and more) with full precision.

Do I need an account?

No. Every calculator works instantly with no signup required.

Do they work on mobile?

Yes. All calculators are mobile-friendly with touch targets sized for phones.

How to Choose the Best Tool

When choosing a tool, consider your specific needs: file size limits, processing speed, privacy guarantees, and batch processing capabilities. All recommended tools have been tested by our team.