diff --git a/when.go b/when.go
index ba537b4..f7cdd3d 100644
--- a/when.go
+++ b/when.go
@@ -31,6 +31,8 @@ type Result struct {
 	Source string
 	// Time is an output time
 	Time time.Time
+	// Duration is an output relative duration
+	Duration time.Duration
 }
 
 // Parse returns Result and error if any. If have not matches it returns nil, nil.
@@ -113,6 +115,8 @@ func (p *Parser) Parse(text string, base time.Time) (*Result, error) {
 		return nil, errors.Wrap(err, "bind context")
 	}
 
+	res.Duration = ctx.Duration
+
 	return &res, nil
 }