Free tools for forms and surveys

Turn a PDF or a photo into a working online form, generate a QR code, or calculate NPS, CSAT, churn, retention, grades, and other survey metrics.

File to form converters

PDF to Form Converter Upload a PDF form and AI rebuilds it as a real, fillable online form. See the result before you sign up for anything. Convert a PDF → Image to Form Converter Photograph a paper form, upload the picture, and AI rebuilds it as a real online form. See it working before you sign up. Convert an image →

QR generators

Google Form to QR Code Paste your Google Form link, generate a scannable QR code, and download a PNG with no watermark for posters, menus, receipts, or slides. Generate Google Form QR → SurveyMonkey to QR Code Paste your SurveyMonkey survey link, generate a QR code instantly, and download a print-ready PNG with no watermark. Generate SurveyMonkey QR → Microsoft Forms to QR Code Paste your Microsoft Forms share link, generate a scannable QR code, and download a print-ready PNG with no watermark for posters, slides, or handouts. Generate Microsoft Forms QR → WiFi QR Code Generator Type your network name and password, generate a scannable QR code, and print it for guests, Airbnb check-ins, office lobbies, or event badges. Generate WiFi QR → vCard QR Code Generator Fill in contact details, generate a scannable vCard QR code, and let people save your number or email in one scan from a business card, badge, or slide. Generate vCard QR →

Calculators

NPS Calculator Enter response counts for promoters, passives, and detractors (or each 0–10 score). Get your Net Promoter Score and a clear loyalty breakdown. Calculate NPS → CSAT Calculator Enter response counts by rating, get your Customer Satisfaction Score, average rating, and an optional sourced industry reference check. Calculate CSAT → Survey Response Rate Calculator Enter surveys sent and responses received, then optionally compare your rate to a published survey-type average. Calculate response rate → Confidence Interval Calculator Estimate a confidence interval for a survey percentage using the Wilson score method. Better behaved than the simple Wald interval for small samples and extreme rates. Calculate interval → Class Grade Calculator Enter each assignment score and syllabus weight. Get your weighted course grade, letter, and 4.0 GPA points instantly. Calculate grade → Churn Rate Calculator Enter customers at the start of a period and how many left. Get churn, retention, lifetime, and correctly compounded annual churn. Calculate churn → Retention Rate Calculator Enter customers at the start of a period and how many stayed. Get retention, implied churn, and compounded annual retention. Calculate retention → Weighted Average Calculator Enter each value and its weight. Get the weighted mean instantly, plus a simple average for comparison. Calculate average → CES Calculator Enter response counts on the standard 7-point CES scale and get the average score plus the low-effort percentage (ratings 6–7). Calculate CES → Margin of Error Calculator Plan sample size before you field a survey. Enter n, pick a confidence level, and optionally set an expected yes/satisfied share to estimate margin of error. Calculate margin → Sample Size Calculator Enter the margin of error you can live with, pick a confidence level, and get the number of completed responses you need before you start fielding. Calculate sample size → Standard Deviation Calculator Paste a list of numbers, choose sample or population, and get the standard deviation with variance, mean, and range alongside it. Calculate standard deviation → Mean Median Mode Calculator Paste a list of numbers and get all three measures of center at once, plus count, range, and standard deviation for context. Calculate mean, median, mode → Z Score Calculator Enter a value, the mean, and the standard deviation to get the z-score, its percentile rank, and the tail probabilities that go with it. Calculate z-score → P Value Calculator Enter a z-score, pick one or two tails, and get the p-value with a plain reading of whether it clears the usual 0.05 threshold. Calculate p-value → Statistical Significance Calculator Enter visitors and conversions for both variants. Get the p-value, the relative lift, and a straight answer on whether the difference is significant. Test significance → Conversion Rate Calculator Enter conversions and visitors to get the rate as a percentage, plus how many visitors it takes on average to earn one conversion. Calculate conversion rate → Chi Square Calculator Paste a contingency table, one row per line, and get the chi-square statistic, degrees of freedom, p-value, and effect size. Run chi-square test → T Test Calculator Compare the means of two groups from their summary statistics. Uses Welch's t-test, which does not assume the two groups have equal variance. Run t-test → ANOVA Calculator Compare three or more group means at once. Enter each group's mean, standard deviation, and size to get the F-statistic and p-value. Run ANOVA → Correlation Calculator Paste your paired values, one x and y per line, and get Pearson's correlation coefficient with r squared and a significance test. Calculate correlation → Probability Calculator Three modes in one page: simple favorable-over-total probability, the chance of at least one success over several trials, and normal distribution areas. Calculate probability →

Need a form with a built-in QR?

Formms is a free AI form builder for iPhone, Android, and the web. Describe the form, share a short link or QR, and read replies on your phone.