CalcRegistry
Blog: Page 2 of 3
Guides, explainers, and tips to help you get the most out of our free calculators and converters.
Neutral density filters: the slow-shutter look, even when the sun won't cooperate
Friendly guide to ND filters for silky water and long exposures when the sun won’t cooperate. How stops work, how to think about shutter time, and a calculator that matches the math.
How Much to Tip at Restaurants, on Delivery, and When the Check Gets Split
Practical tipping math for sit-down meals, delivery apps, and group checks: what percentages usually mean, whether to tip before or after tax, and how to split fairly without a fight.
How Much Protein Do You Actually Need? (Beyond the One-Number Myths)
Protein targets depend on weight and goals. How the 0.8 g/kg RDA maps to pounds, when to go higher, and how to check protein against your calorie budget.
Time-lapse photography: creative uses and the interval math that keeps you out of trouble
Creative ideas for time-lapse, field tips (dew, power, cards, tripod), and the interval math for clip length and storage. Matches CalcRegistry’s Time-lapse Planning Calculator.
Your Debt-to-Income Ratio: What Counts and How Lenders Use It
Debt-to-income (DTI) decides a lot about mortgage approval. Learn front-end vs back-end DTI, what payments lenders include, current Fannie Mae limits, FHA benchmarks, and VA rules.
401(k) Employer Match: How It Works With 2026 Limits
401(k) match explained: 2026 IRS deferral limits, overall plan caps, and Roth match allocation per IRS FAQs. General information, not tax advice.
The Subscription Audit: What You're Really Spending
Most people underestimate their monthly subscription spend by a lot. Here's why, and how a quick audit can put real money back in your pocket without turning you into a miser.
Rent vs. Buy: How to Make the Right Decision
The rent-or-buy debate is usually reduced to one number on Zillow. Here's a practical way to weigh time, cash, risk, and flexibility before you sign anything.
How Much Car Can You Actually Afford?
The dealer will tell you what payment you qualify for. That is not the same as what you can afford. Here is how to pin down your own number before you land on a lot.
What Is Inflation and How Does It Affect Your Money?
Inflation means your money buys less over time. Here's what's actually driving it right now, how it affects your everyday finances, and what you can do about it.